Axle-nut.



. PATBNTED MAY 14,1907. 4 T. MILLIGAN.

AXLB NUT.

.APPLIoATloN-FILBD-Nov.1,190e.

'if-l- W/TNESSES' INVENTOH 'ATTORNEYS 1HE amzls PETERS cc.. wAsHmAcroN,n. c.

9, which engages the interior thread 7a of UNITED `STATES PATENTOFFICE.'

THOMAS MILLIGAN, OF FORTUNA, CALIFORNIA, ASSIGNOR OF ONE-HALF TO EDGARMOLOUGHLIN, OF FORTUNA, CALIFORNIA.

AXLE-NUT.

Specioation of Letters Patent.

Application 'filed November l, 1906. Serial No. 341,564.

No. 853,712. Patenten May 14, 1907.

To @ZZ whom, t may concern.-

Be it known that I, THOMAS MILLIGAN, a citizen of the United States, anda resident of Fortuna, in the county of Humboldt and State ofCalifornia, have invented a new and Improved Axle-Nut, of which thefollowing is a full, clear, and exact description.

My invention relates to axle nuts, and has for its object to providecompensating means adapted to take up the lost motion occasioned by thewearing of the end oflan axle box, and thereby hold the box againstlongitudinal motion on the axle. 4

his I accomplish by the means illustrated in the accompanying drawings,in which drawings like. characters of reference indicate like partsthroughout the views, and in which Figure l is a central longitudinalsection of a device embodying my invention attached the end of an axlespindle; Fig. 2. is a side elevation partly in section, of a cap nutform,- ing part of my invention; Fig. 3 is a transverse section of anextension ring adapted to engage the cap nut; and Fig. 4 is a sideelevation of the extension ring shown in Fig. 3.

As illustrated in the drawings, 1 represents the spindle of an axlehaving a reduced threaded end 2 of ordinary construction, and journaledin an axle box 3 secured to a hub 4 which is provided `on its outer endwith a :liange 5. A nut 6 is provided with an interior bore 6a andpreferably with a closed end 6b forming a cap on the nut. An annularcollar 7 is formed on the inner end of the nut and is off-set therefrom,and provided with a thread 7a on its interior periphery. An annularrecess 7 b is preferably formed on the inner face of the nut outside ofthe threaded bore thereof, and adapt-ed to accommodate a washer 8. Anextension collar 9 is provided on its outer periphery with an exterior`.thread left-handed, while the thread of the bore of the nut isright-handed. The extension collar 9 is provided with an annular recess9b in the face of the collar, which permits said face to bear againstthe end of the axle box 3 and allows a projecting rim 93 to overlap theend of the axle box. The collar 9 is'provided with oppositely disposedapertures 9d adapted to receive the pins of a spanner and enable saidring to be adjusted on the collar of the nut. As the axle box 3 isreduced by wear at its end, the extension ring 9 may be readily`projected slightly on the collar of the nut, thereby compensating forthe wear of the end of the axle box, and preventing longitudinalmovement of the hub on the spindle and enabling the hub to rotate evenlyand noiselessly thereon. i

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

The combination with a spindle having a reduced screw threaded end, of asleeve yencircling the spindle, a nut having an exteriorly threaded borefor engaging the reduced end of the spindle, said nut having an annularcollar offset from the bore and provided with screw threads, the screwthreads of the collar running in the opposite direction from the screwthreads on the reduced ends having one of its faces adapted to abutagainst the sleeve, and provided with spaced openings for receiving aSpanner, said ring having a flange for overlapping the outer sur ace ofthe sleeve near the end thereof, said ring being screw threaded upon itsouter face whereby to engage the threads of the annular collar.

In testimony whereof I have signed my naine to this specification in thepresence of two subscribing witnesses, on this 24th day of the collar 7of the nut, and together with said October 1906. interior thread of thecollar is of an opposite THOMAS MILLIGAN. character to the thread of thebore of the nut, 'the thread of the extension collar'9 and the interiorthread of the collar 7 of the nut being Witnesses: JAMES JOHNSoi-IREIBER, JOHN WILLIAM DIXON.

of the spindle, an extension collar or ringv

